Magnetic recording and/or reproducing system

Abstract From the Canadian patent

In a system in which the polarity of the frequency converted chrominance signal or carrier is reversed during alternate lines of alternate fields recorded on alternate tracks on a recording medium and not reversed during the lines that make up the remaining alternate fields recorded in h-alignment on the remaining alternate tracks positioned in interleaving relationship with the first-mentioned tracks locgic-, controlled switching means are provided to select the field intervals during which the plurality of the chrominance subcarrier will be reversed in alternate lines. The same logic circuits can be used to control the switching during both recording and reproducing so that the alternate …